[Bug 664169] Re: loading images doesn't use proxy credentials

[Brian J. Murrell]

Great.  So will this go into a new release for evolution for Maverick or
has interest in maintaining evolution in Maverick waned?

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https://bugs.launchpad.net/bugs/664169

Title:
  loading images doesn't use proxy credentials

Status in The Evolution Mail & Calendaring Tool:
  Fix Released
Status in “evolution” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: evolution

SRU JUSTIFICATION:
Small patch to use along with patch in bug 664167 to use proxy credentials to load images.
This is a big issue for corporate users wishing to have access to rich email content (embedded images) from behind a secured proxy (as it is the case in many large enterprises).

There is minimal impact since this only affects users behind a proxy, and only if they use a secured proxy (requiring authentication).

TEST CASES:
 - Requires a proxy with authentication turned on. This can be easily achieved using squid using the pam_auth provider, for example.

1) Configure the proxy settings in Gnome (System->Preferences->Network Proxy) or Evolution (Edit->Preferences->Network Preferences), including authentication username and password.
2) Load a message which contains embedded images from the Internet in a URL document (see attached example: lp_664169_test_case.mbox -- this test case can be loaded in Evolution by double-clicking it)
3) Force loading the images from the Internet by pressing Ctrl-I.

For a successful test cases, you will see embedded images being loaded from the Internet and displayed in the message.
For a failed test cases, the images will not load.

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We need the patch from upstream bug 631526 to land so that proxy credentials are used properly when loading images.